B. Lanzoni

Exploring the optical properties of redback pulsars: The case of J1717+4308A in the globular cluster M92

Jianxing Chen, Greta Ettorre, Cristina Pallanca, Mario Cadelano et autres

Binary millisecond pulsars (MSPs) in globular clusters (GCs) are key for binary and stellar evolution studies under extreme conditions. The identification of their optical companion stars is instrumental in order to characterise these systems and to constrain the possible recycling mechanisms. For …

cn, it, no, de, us, es, gb (code pays fourni par la source)

CRIRES+ Reveals the Chemistry of the Stellar Subpopulations in the Bulge Fossil Fragment Liller 1*

L. Chiappino, L. Origlia, C. Fanelli, A. Bartolomei et autres

Abstract In this paper, we present the chemical screening of the complex stellar population discovered in the Bulge Fossil Fragment Liller 1. This study is part of the Bulge Cluster Origin (BulCO) survey based on a Large Program at the ESO-Very Large …

it, de (code pays fourni par la source)

Kinematic catalog of stars in NGC 6569

Cristina Pallanca, Silvia Leanza, F. R. Ferraro, B. Lanzoni et autres

it, us, de (code pays fourni par la source)

A binary-related origin mediated by environmental conditions for blue straggler stars

F. R. Ferraro, B. Lanzoni, Enrico Vesperini, E. Dalessandro et autres

Blue stragglers are anomalously massive core hydrogen-burning stars that, according to the theory of single star evolution, should not exist. They are suspected to form in mass-enhancement processes, involving binary evolution or stellar collisions. In dynamically active systems like globular clusters, the …

it, us, de (code pays fourni par la source)

A binary-related origin mediated by environmental conditions for blue straggler stars

F. R. Ferraro, B. Lanzoni, Enrico Vesperini, E. Dalessandro et autres

Blue stragglers are anomalously massive core hydrogen-burning stars that, according to the theory of single star evolution, should not exist. They are suspected to form in mass-enhancement processes, involving binary evolution or stellar collisions. In dynamically active systems like globular clusters, the …

it, us, de (code pays fourni par la source)

Fast Rotating Blue Straggler Stars in the globular cluster NGC 1851

Alex Billi, L. Monaco, F. R. Ferraro, A. Mucciarelli et autres

In this work we study the rotational velocities of a sample of blue straggler stars (BSSs) and reference stars belonging to the Galactic globular cluster NGC 1851, using high-resolution spectra acquired with FLAMES-GIRAFFE at the ESO/VLT. After field decontamination based on radial …

Detection of a white dwarf orbiting a carbon-oxygen-depleted blue straggler in 47 Tucanae

Elisabetta Reggiani, Mario Cadelano, B. Lanzoni, Francesco R. Ferraro et autres

We employed deep far-UV observations secured with the Solar Blind Channel of the Advanced Camera for Surveys onboard the Hubble Space Telescope to search for hot companions to five blue straggler stars (BSSs) showing significant surface depletion of carbon (C) and oxygen …

it, gb (code pays fourni par la source)

Potential discovery of the long-sought optical counterpart to the Rapid Burster in the bulge fossil fragment Liller 1

Cristina Pallanca, F. R. Ferraro, B. Lanzoni, Mario Cadelano et autres

We report the possible identification of the optical counterpart of the Rapid Burster MXB 1730-335 in the stellar system Liller 1. The identification was performed by taking advantage of a set of images acquired with the Hubble Space Telescope/Advanced Camera for Surveys …

it, ca, us, gb, fr, in (code pays fourni par la source)

Detection of a white dwarf orbiting a carbon-oxygen-depleted blue straggler in 47 Tucanae

Mario Cadelano, B. Lanzoni, F. R. Ferraro, M. Salaris et autres

We employed deep far-UV observations secured with the Solar Blind Channel of the Advanced Camera for Surveys onboard the Hubble Space Telescope to search for hot companions to five blue straggler stars (BSSs) showing significant surface depletion of carbon (C) and oxygen …

A candidate to the long sought optical counterpart to the Rapid Burster in the bulge fossil fragment Liller 1

Cristina Pallanca, F. R. Ferraro, B. Lanzoni, Mario Cadelano et autres

We report on the possible identification of the optical counterpart of the Rapid Burster MXB 1730-335 in the stellar system Liller 1. The identification was performed by taking advantage of a set of images acquired with the Hubble Space Telescope/Advanced Camera for …

it, ca, us, gb, fr, in (code pays fourni par la source)

Structural parameters, chronological age, and dynamical age of the Large Magellanic Cloud globular cluster NGC 1754

Camilla Giusti, Mario Cadelano, F. R. Ferraro, B. Lanzoni et autres

In the context of a new systematic study of the properties of the most compact and massive star clusters in the Large Magellanic Cloud (LMC), we present the determination of the chronological age, the structural parameters, and the dynamical age of NGC …

us (code pays fourni par la source)

The Hubble Missing Globular Cluster Survey

D. Massari, M. Bellazzini, M. Libralato, A. Bellini et autres

We present the Hubble Missing Globular Cluster Survey (MGCS), a Hubble Space Telescope Treasury Program dedicated to the observation of all kinematically confirmed Milky Way globular clusters that missed previous Hubble imaging. After introducing the aims of the programme and describing its …